Table 3.
Sensitivity analysis.
| Variables | Model 3 | P |
|---|---|---|
| OR (95% CI) | ||
| Sleep duration | ||
| <6 h | 1.98 (1.18–3.32) | 0.007 |
| 6–7 h | Ref | |
| 7–8 h | 1.05 (0.65–1.71) | 0.829 |
| ≥8 h | 1.19 (0.76–1.87) | 0.438 |
| Sleep disorder | ||
| No | Ref | |
| Yes | 1.60 (1.03–2.47) | 0.028 |
| Time required to fall asleep | 1.01 (1.01–1.02) | 0.013 |
| Frequency of sleep deprivation | ||
| Never | Ref | |
| One time a month | 0.91 (0.55–1.49) | 0.685 |
| 2–4 times a month | 1.32 (0.84–2.07) | 0.206 |
| 5–15 times a month | 0.79 (0.42–1.48) | 0.447 |
| 16–30 times a month | 2.33 (1.28–4.22) | 0.004 |
| Frequency of early-morning wakefulness | ||
| Never | Ref | |
| One time a month | 0.91 (0.56–1.47) | 0.680 |
| 2–4 times a month | 1.12 (0.64–1.99) | 0.674 |
| 5–15 times a month | 1.09 (0.64–1.85) | 0.734 |
| 16–30 times a month | 2.44 (1.30–4.59) | 0.004 |
| Frequency of midnight wakefulness | ||
| Never | Ref | |
| One time a month | 0.96 (0.61–1.51) | 0.860 |
| 2–4 times a month | 1.10 (0.70–1.72) | 0.671 |
| 5–15 times a month | 1.31 (0.83–2.04) | 0.225 |
| 16–30 times a month | 2.16 (1.13–4.13) | 0.015 |
OR – odds ratio; CI – confidence interval; Ref – reference. Model 3: adjustment of age, gender, BMI, marital status, race, education level, family PIR, waist circumference, hypertension, CHF, CHD, angina pectoris, heart attack, platelet count, diabetes, beta-blockers, and antidepressants.